How to Use Foreground Location in a Food Delivery App and Store Data in Firebase?
Introduction
Location tracking is a crucial feature for food delivery apps, ensuring real-time order tracking, accurate ETAs, and seamless delivery management. Using foreground location tracking, an app can update user locations continuously while the app is open. Firebase provides a robust backend to store and manage this location data efficiently.
Steps to Implement Foreground Location Tracking and Store Data in Firebase
Enable Foreground Location Tracking
Use FusedLocationProviderClient (Android) or CoreLocation (iOS) to get the user's real-time location.
Request the necessary location permissions (ACCESS_FINE_LOCATION and ACCESS_COARSE_LOCATION for Android, NSLocationWhenInUseUsageDescription for iOS).
Continuously fetch the location while the app is in the foreground.
Store Location Data in Firebase
Use Firebase Realtime Database or Firestore to store live location updates.
Structure the database to store user ID, latitude, longitude, timestamp, and order ID.
Implement Firebase Firestore's real-time listeners to update the delivery agent’s location dynamically.
Display Real-Time Location on Maps
Integrate Google Maps API or Mapbox to show the rider’s live location.
Use Geofencing to alert customers when their food is nearby.
Update UI dynamically based on Firebase location changes.
Optimize for Performance & Battery Efficiency
Reduce location update frequency to optimize battery life.
Use Android WorkManager or iOS Background Fetch for occasional updates when the app is in the background.
Enable Firebase Firestore offline persistence for better reliability.
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As of Nov 24 this is not yet resolved. Here is a post by an Apple engineer referencing the known issue:
Thanks for the report! This is a known issue and is tracked by 133331523.
To receive a valid progress, please use UIKit PHPickerViewController until 133331523 is addressed.
I have figured out how to do it and it appears to be somewhat undocumented in the ESP32-C6 Technical Reference Manual so I'm posting it here for reference.
If you right click on any project you are interested in and click 'Remove Unused Packages' you will see the following summary of any unused packages, then you can go ahead and remove them all, or selected packages as desired
What we want to do is not possible. Because more specific types (inheritance types) must have a compatible interface with parent types. This is necessary for polymorphism to work (the client should not know what subtype it is working with, having a reference to the parent type).
Thanks, for the answer it was really helpful. I have similar needs most of which are fullfilled except the PAN card number. I am using the following XML payload to export the voucher details including gst number, pan number and narration. I was able to get the GST number working but I still can not get pan number and narration. Could you please help?
Pythons int() function does more than just converting a string to integer.The behavior varies based on the argument and an optional base parameter. we can break down behavior as follows:
No arguments
int() # returns 0
Numeric Arguments
If the argument if an integer
int(5) # return 5
If argument if a float, then it will remove(truncate) the fractional part
int(2.04) # return 2
string Arguments
int() strips any whitespace, and also can handle an optional sign(+ or -) and then converts the sequence of digits to an integer.
For example:
int(" -10 ") # returns -10
We can also provide an optional base for conversion
int("1010", 2) # returns 10 (binaray to decimal)
Steps in the conversion process
String Handling
Strip whitespace.
Handling leading sign(+ or -).
Validation
To check all charters are vailid digits for the given base.
Digit conversion
Convert each charater to its corresponding numerical value.
Accumulation
Compute the integer value by iterating through each digit
For example:
def custom_integer_converter(s, base=10):
# Ensure input is a string
if not isinstance(s, str):
raise TypeError("Input must be a string")
s = s.strip().lower() # Handle whitespace and case insensitivity
if not s:
raise ValueError("Empty string after stripping whitespace")
# Determine the sign
sign = 1
if s[0] == '-':
sign = -1
s = s[1:]
elif s[0] == '+':
s = s[1:]
if not s:
raise ValueError("No digits after sign")
# Validate characters and convert to integer
value = 0
for c in s:
# Convert character to numerical value
if c.isdigit():
digit = ord(c) - ord('0')
else:
digit = ord(c) - ord('a') + 10
# Check if digit is valid for the base
if not (0 <= digit < base):
raise ValueError(f"Invalid character '{c}' for base {base}")
value = value * base + digit
return sign * value
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The image contains the implementation of the code mentioned above, along with tested inputs.
Reasons:
Blacklisted phrase (1): enter image description here
I faced a similar issue earlier. With the recent release, BigQuery DATETIME support has improved in the newer versions of the BigQuery Connector. Upgrading to BigQuery Connector 0.34.0 resolved the issue for me.
In short it uses require to load in each of the files in the app/config directory in turn and sets the resulting value in a big array wrapped up in some utilities to make accessing values easier.
Quite a while ago..., but I stumbled over the same problem - many people seem to have the same problem, but there was no proper solution.
Finally I found this and it solved it!
ContextMenuStrip from a left click on a Notify Icon
In short: the default right-click p/invokes SetForgroundWindow before showing the menu.
So adding this to Your code will make it behave like it does when performing a right-click:
Here's some code in GLBAsic, that I wrote to print an image to an ESCPOS printer. There's 3 methods you could use. I found ESC * the most compatible one. The NV ram, I could not get working and the GS v 0 method worked best, but is said to be deprecated.
Thanks for the above green marked solution, helped me a great deal. Had the same frustration. (can't add a direct comment reply as I am not "reputable" enough).
You could operate over a list of all prime factors less than N to produce an unordered, but complete list of numbers less than N.
Generate a list of all prime numbers with up to N. So, you got p1, p2, ..., pn.
Make a list of matching exponents for every prime number. So, now you have a data structure representing p1e1, p2e2, ..., pnen
Now, to the fun part:
Initialize all exponents with zero. This gives you the prime factorization of 1.
Now, start with the first prime number, and increment its exponent. You got another new number, multiply the prime factors, save it for later.
Is the number bigger than N? Trash the number. Set the exponent back to 0. Increment the exponent of the next bigger prime. Is that too big as well? Set the exponent to 0 too, increment the next prime exponent. Repeat until you produce a number < N.
Repeat at step 2.
If you cannot increment any exponent in step 3 any more, you have produced every natural number, alongside with their prime factorization.
For example, producing every number <= 6:
The prime numbers would be 2,3,5
Start with exponents being 0,0,0:
20 * 30 * 50 = 1 -> save it.
Increment the exponent of the lowest prime factor:
21 * 30 * 50 = 2 -> save it
Increment the exponent of the lowest prime factor:
22 * 30 * 50 = 4 -> save it, notice we are missing 3, but we'll get there
Increment the exponent of the lowest prime factor:
23 * 30 * 50 = 8 -> Trash it, 8 > 6
Set exponent of the lowest prime factor back to zero, increment the next exponent
20 * 31 * 50 = 3 -> save it.
Increment the exponent of the lowest prime factor:
21 * 31 * 50 = 6 -> save it.
Increment the exponent of the lowest prime factor:
22 * 31 * 50 = 12 -> Trash it, 12 > 6
Set exponent of the lowest prime factor back to zero, increment the next exponent
20 * 32 * 50 = 9 -> Trash it, 9 > 6
Set exponent of the next to lowest prime factor back to zero, increment the next exponent
20 * 30 * 51 = 5 -> Save it.
Since your list of results now has 6 elements, you are finished.
reinterpret_cast is the correct cast to use for non-typesafe pointer conversion. Your "plain" or "C-style" cast would do the same implicitly, however, kind of masking the type conversion.
Your specific compiler error, however, is more likely the result of casting constness. For those situations use const_cast (see reference).
You code did work for me and i was able to dump out the cms data with the 'yoohoo' string. One thing i could think of is that the new class is not found: have a look here hope this would help.
There are open-source solutions like react-native-vision-camera that support both iOS and Android.
However, if you're looking for a more reliable solution that supports a wide range of barcodes, performs under challenging conditions (low-light, damaged barcodes), and comes with dedicated developer support, I'd recommend looking into a commercial solution, like Scanbot SDK (disclosure: I'm part of the team).
A colleague of mine actually wrote a tutorial for ReactNative, I'll leave it here in case someone wants to check it out. FYI: yes, we are a commercial solution, but we provide free trial licenses!
Testing with edge cases, where a user’s input might be vague or contradictory, can help you refine the accuracy of your analysis. For example, test responses where users mention only partial information, like saying "I've been feeling tired," but not explicitly mentioning sleep issues.
In Java, you can create custom exceptions by extending the Exception class (for checked exceptions) or Runtime Exception class (for unchecked exceptions). Custom exceptions allow you to define specific error conditions and provide meaningful messages.
Usually, Standard compiler settings might not put an error. as this specific scenario as it doesn't violate syntax rules and doesn't pose an immediate risk of undefined behavior. and basic function of a compiler is to check syntaxial errors what your question is more based on runtime error
An alternative is to extract the .Data slot from the S4 object with @. The code below will produce the same result as the code provided by Jari Oksanen.
No, in modern Linux kernels, it is not typically possible to run programs without any non-executable segment protection due to several security mechanisms in place. These protections are designed to prevent arbitrary code execution and mitigate vulnerabilities such as buffer overflows and return-oriented programming (ROP) attacks. For more factosecure
I am used to run my application without debugging (Ctrl+F5), and there was an error in Program.cs that was the origin of that message. Running with debugging let me find the faulty statement, and the message disapeared.
We have been experiencing similar problems with our app and I agree with Zags's answer, but just want to add one piece of valuable information that I have just found out:
The app's folder is not replaced EVERYTIME you make changes to your configuration, but it seems there are certain triggers inside a configuration change that result in a replaced app folder. So far I've found that a change to an ENVRIONMENT VARIABLE causes the app folder to be freshly built (well, sort of, considering the lack of container_commands), while, e.g. an update to, say, a scaling threshold, doesn't.
If you're looking for an enterprise-level SDK, perhaps check out Scanbot SDK (full disclosure, I am part of their team). My colleague actually wrote a step-by-step tutorial about integrating barcode scanning in Flutter. I'll link it here!
We offer detailed documentation and support during integration and ready-to-use scanning interfaces and features like multi-scanning or AR overlays. Also, we provide free trial licenses for testing purposes.
By default, Snakemake sees the first rule as its target. Thus, if you just run something like snakemake -n, it tries to solve for rule run_simulations. If you move rule all above rule run_simulations, it should work
The same problem I have and not yet solved ... Can you notice more detail about the solution you noted, Shakya ?
I want to use the colab trained & downloaded best.pt for the yolov5 detect.py in windows 11.
Try to find if any 'other' services are using the same port for connecting to the hosted server. Stop the 'other' service and the issue might be resolved.
I am facing the same problem, the image is in png of 512*512. It is visible to me when I log in as admin in wordpress but not to any users or to me when I use incognito mode. I have tried to clear cache, also included the link to my website header.php file but still the same issue. Is there a guranteed solution to this problem?
Got it working at last. I had to specify library path through CFLAGS ... I had previously no experience with commandline building, so this was like exploration of the new world for me.
sudo ./configure CFLAGS="-I/opt/homebrew/include -L/opt/homebrew/lib"
sudo make CFLAGS="-I/opt/homebrew/include -L/opt/homebrew/lib"
I encountered a similar issue in Spring 4.2.8. When I created the project, the resources folder was missing. I manually added it inside src/main, and after that, everything worked fine. However, I'm not sure why the file wasn’t being detected initially, even though it was in the classpath. Any ideas on what might have caused this?
It's solved. I uninstall for the 3rd time IISExpress 10.0 with all the directories it created before and I reinstallit from the visual studio installer and it worked.
"Tcpkg uninstall all" can be used in command prompt if you run as admin. This removes everything. You have to (re)install the twinCAT package manager as that installs the commandline tool.
The code is absolutely fine. I suspect the issue is due to incompatibility between the Spark version you are using and the Python version you have.
Please downgrade to PYTHON3.12 and see if that helps.
To extract a YAML file from OpenShift (such as a ConfigMap or DeploymentConfig) while removing unnecessary metadata fields like resourceVersion and uid, use the following command:
oc get cm -o yaml | yq 'del(.metadata.uid, .metadata.resourceVersion)' - > output.yaml
This ensures a clean backup without dynamic metadata fields that may change across deployments.
because everytime you call DateTime.Now it gets the current state.
Now you call it 2 times leading to a sliightly different timestamp.
This means the second DateTime.Now).Days has something like 0.000000001 later calltime resulting in your equasion somewhere like 23:59:59.99999 thus resulting not in a full 24h equals... 0 days
"I'm experiencing the same issue on Ubuntu while using Angular 17. Previously, I had developed an application that worked fine on Ubuntu 20.04, so I set up my new project on top of that older one. However, I’m still facing the same problem.
I'm not sure if this is due to a package incompatibility, but I’ve tried multiple versions of tauri/api dependencies without success.
In my case, when I reviewed the .gitlab-ci.yml, i found that there was a typo in image i was pushing to registry after build. That caused mismatch and image got pushed to registry with the wrong tag. So, always double-check are you pushing what you built?
e.g. after correction,
select parse_json('{"summary": {"disconnectTimestamp":"2024-03-21T20:19:57.398Z"}}'::string) as test_json,
test_json:summary.disconnectTimestamp::timestamp_ntz as final_timestamp
Check Configuration: Ensure that postgresql.conf and pg_hba.conf are correctly configured with wal_level, max_wal_senders, hot_standby, etc.
Check Pgpool-II Configuration: Make sure pgpool.conf is properly configured for both primary and standby nodes, and pcp.conf has the correct user and password.
Check Replication Slot: Verify if the replication slot is active. If not, try recreating the slot:
sql
SELECT pg_drop_replication_slot('your_slot_name');
SELECT pg_create_physical_replication_slot('your_slot_name');
Check Logs: Review PostgreSQL and Pgpool-II logs for any replication-related errors.
If the problem persists, check if the walsender process is running correctly.
You might have facing this issue if you were logged into a different Catalyst application previously and then tried to access another one, while the login cookie from the earlier project persisted in your localhost. To resolve this, kindly testing your application in catalyst serve within an incognito window. This will prevent any cookie conflicts from previous sessions.
This issue is often caused by an XML file having unexpected characters before the actual content. The error message "Content is not allowed in prolog" typically means there's an invalid character (like a BOM or non-printable character) before the XML declaration (<?xml ...>).
To fix this:
Open the package.xml file in a text editor.
Check if there are any unexpected characters or spaces before the <?xml ...> declaration. If there are, remove them.
Save the file and try running the code again.
If you're not able to locate the issue or the file seems fine, you might want to try regenerating or re-downloading the Flutter project to ensure everything is set up correctly.
Got same problem here, when I request through curl, I got the same problem with no (valid) return.
I assume this is due to the high volume of attacking towards DeepSeek these days. You can check the api status here, though it says that today (Feb 6, 2025) everything is fine.
We found a rather unusual solution. Although no error or warning was logged in Application Insights, a restore of our main database did the trick and solved our issue.
It could be a coincidence or not, but restarting any of the used services didn't solve the issue. Only a full restore of the db solved our problem. We never had such a problem in the past, usually if something is wrong with the db we see it in the logs or some specific requests fail, but never the whole app without any trace.
